Lines
This is a closed figure with at least 3 sides.
What is a polygon
This is used to measure angles
What is a protractor
Two interior angles of a triangle are 20 and 25 degrees. What angle is 45?
What is the non- adjacent exterior angle?
A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?
What is Right, isosceles